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tan rad
Author:
Ng Ching Yi
GeoGebra
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第八周作业
三位數除以一位數（一）
球体的体积推导（优化版）
四邊形的特性
拼砌四邊形
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任務3
圓內接四邊形 ABCD ...，求 sinθ=?
優良作品6
硬幣
不等式
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Histogram
Optimization Problems
Circumcircle or Circumscribed Circle
Angles
Linear Equations